| 1. 
  |  | Title: Recent Advances and Historical Development of Vector Optimization (Lecture Notes in Economics and Mathematical Systems Vol 294) by W. Krabs, Johannes Jahn
 ISBN: 0387182152
 Publisher: Springer Verlag
 Pub. Date: November, 1987
 List Price: $71.95
 Amazon.com Price: $71.95
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| 2. 
  |  | Title: Optimal Control of Partial Differential Equations (International Series of Numerical Mathematics, Vol 68) by K.H. Hoffmann, W. Krabs
 ISBN: 3764315989
 Publisher: Springer Verlag
 Pub. Date: September, 1984
 List Price: $39.95
 Amazon.com Price: $39.95
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| 3. 
  |  | Title: Modern Methods of Optimization (Lecture Notes in Economics and Mathematical Systems) by W. Krabs, J. Zowe
 ISBN: 3540551395
 Publisher: Springer-Verlag Berlin and Heidelberg GmbH & Co. KG
 Pub. Date: 31 March, 1992
 
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| 4. 
  |  | Title: Optimal Control of Partial Differential Equations: Proceedings of the Ifip Wg 7.2 International Conference Irsee, April 9-12, 1990 (Lecture Notes in) by K.-H Hoffmann, W. Krabs
 ISBN: 0387535918
 Publisher: Springer Verlag
 Pub. Date: July, 1991
 List Price: $65.95
 Amazon.com Price: $65.95
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